Improvement in sewing-machines



V 2 Sheets-Sheet 1. NETTLETON 8L RAYMOND.

Sewing Machine.

No. 18,350. Patented Oct. 6, 1857.

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Sewing Machine.

No. 18,350.- Patented 0m. .6, 1857.

Wwgql g? M% UNITED STATES PATENT OFFICE,

\V. H. NETTLETON AND CHAS. RAYMOND, OF BRISTOL, CONNECTICUT.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. [8,350, dated October (5, 1857.

To alZ whom it may concern.-

Be it known that we, XVILLFORD H. N ET- TLETON and CHARLES RAYMOND, of Bristol, in the county of Hartford and State of Connecticut, haveinvented, made, and applied to use a certain" new and useful Improvement in Sewing-Machines and we do herebydeclare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making part of this specification, wherein-- Figure 1 is a side elevation of our said sewing-machine. Fig. 2 is a plan of the base thereof as if inverted. Fig. 3 is an end view with part of the bed removed to show the parts, and Fig. 4. is a detached plan of the looper. r

Similar marks of reference indicate the same parts.

The nature of our said invention consists in a peculiar construction of feed-motion to move the material that is being sewed.

In the drawings, a is the metallic bed; I), the box containing the cam d, which is set on the shaft 1, and revolved by means of a flywheel, 0, and handle.

e is a bent lever set on the-fulcrum 1:, and given a vibrating motion by means of the cam d, acting on a stud on the short end of said lever, and for this purpose the cam (Z may be shaped as shown by dotted lines, Fig. 2.

g is the needle-slide on the endof the arm h, and i is the needle, with an eye near its point, secured in the carrier-bar It. A loop in the upper end of this bar it receives the end of the lever c, and from it the needle derives a vertical motion.

The looper which we use is constructed as follows: Zis the looper set on a fulcrum, '2, on the under side of the bed a. m is a spring tending to keep the looping-points 5 against the under side of the bed 1. 6 is a guide and the curvature described by the point 5 in the descent of the looper brings said point on the opposite side of the needle, and as the needle rises thesaid point 5 again crosses theneedle by the curvature of its ascending path and takes off the loop and holds the same ready for the needle in its next downward motion to enter said loop, and said loop is dropped by the looper as it moves backward again as the needle descends, making a very simple and efficient looping apparatus.

a is a small cam on the shaft 1 moving the lever f to operate the feed-motion, and this cam n is so timed that the feed-n10tion acts at the time the needle is withdrawn from the cloth.

0 is a pressure-clamp sliding vertically in the part 9, and on the upper end of this pressure-clamp 0 is abent lever, p, on afulcrum, 8, having a thumb-piece at 9 and a step at 10, receiving the end of the regulating-screw 7 through the end of the lever f. This lever 19 serves the purpose of disconnecting the feedmoti'on and of raising the pressure-clamp 0 off the cloth, while the screw 7 causes the cam a and lever f to give more or less vertical motion to the clamp 0 and increase or decrease the length of stitch.

q is a metallic springbed set on the bed a, and attached by screws, rivets, or otherwise in such a manner as will allow said bed q to yield freely to pressure from the clamp 0.

r r are inclined spring feeding-fingers made with serrated edges on their upper ends, which ends (as well as the needle) pass through openings in the spring-bed q. The operation of this is that as the clamp 0 is forced down the bed q yields, and as the cloth and bed descend the serrated edges of the fingers 1" take said cloth, and, standing in an inclined p osition, give more or less feeding motion to the cloth,according to the amount which the spring-bed q and clamp 0 are pressed down by. the lever f and cam a. The cloth is thus fed along a regulated distance with great certainty, and the parts are to be so timed that the feed motion takes place when the needle is out of the cloth, although said needle might be allowedoperation of our sewing-machine, what We our signatures this 10th day of September, elaim, and desire to secure by Letters Patent, 1857. 1s

The spring bed-plate q, in combination with the pressure-clamp 0 and inclined spring-fin WILLFORD H. NE'ITLETON. CHARLES RAYMOND.

gers r, to feed the 010th, substantially as speei- Witnesses: fled. CHARLES CHURCHILL,

In witness whereof we have hereunto set Guns N. LANGDON. 

